Analysis
- max time kernel
67s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
13/04/2023, 09:05
General
- Target DOC-23001897.exe
- Size 829KB
- Sample230413-k16fhsad93
- SHA256 59fab9b58703b5208ad279d79225762a44b6b87709166aeaaebc34fcd31c229f
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.strictfacilityservices.com
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Port
587
-
Username
-
Password
SFS!@#321
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Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\DOC-23001897.exe"C:\Users\Admin\AppData\Local\Temp\DOC-23001897.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sSlAtp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp37F8.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\DOC-23001897.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
DOC-23001897.exe.log
tmp37F8.tmp
memory/1100-148-0x0000000005770000-0x0000000005780000-memory.dmp
memory/1100-144-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1100-151-0x0000000005770000-0x0000000005780000-memory.dmp
memory/1100-150-0x0000000006D90000-0x0000000006F52000-memory.dmp
memory/1100-149-0x0000000006B70000-0x0000000006BC0000-memory.dmp
memory/1100-147-0x00000000057F0000-0x0000000005856000-memory.dmp
memory/4532-139-0x0000000005B70000-0x0000000005BC6000-memory.dmp
memory/4532-135-0x0000000005FE0000-0x0000000006584000-memory.dmp
memory/4532-134-0x0000000005990000-0x0000000005A2C000-memory.dmp
memory/4532-140-0x0000000005D00000-0x0000000005D10000-memory.dmp
memory/4532-133-0x0000000000F40000-0x0000000001016000-memory.dmp
memory/4532-136-0x0000000005AD0000-0x0000000005B62000-memory.dmp
memory/4532-138-0x0000000005A50000-0x0000000005A5A000-memory.dmp
memory/4532-137-0x0000000005D00000-0x0000000005D10000-memory.dmp